diff --git a/options/linux/generic/sys-signalfd.cpp b/options/linux/generic/sys-signalfd.cpp
index 28cfea0281..84182cea3d 100644
--- a/options/linux/generic/sys-signalfd.cpp
+++ b/options/linux/generic/sys-signalfd.cpp
@@ -6,6 +6,10 @@
 #include <mlibc/linux-sysdeps.hpp>
 
 int signalfd(int fd, const sigset_t *mask, int flags) {
+	if(fd != -1) {
+		mlibc::infoLogger() << "mlibc: signalfd with fd != -1 is not supported yet" << frg::endlog;
+		return 0;
+	}
 	__ensure(fd == -1);
 	MLIBC_CHECK_OR_ENOSYS(mlibc::sys_signalfd_create, -1);
 	if(int e = mlibc::sys_signalfd_create(mask, flags, &fd); e) {